Cotton-gin.



- J. c. HOLLINGSWORTH.

COTTON GIN.

APPLIGATION FILED AUGJ, 1910.

2 SHEETS-SHEET 1.

Patented 0013.17, 1911.

J. C. HOLLINGSWORTH.

COTTON GIN..

APPLIGATION FILED AUG. 1, 1910..

Patented 0011.111911.

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COTTON-GIN.

Specification of Letters Patent.

Patented Oct. 17, 1911.

Application led August 1, 1910. Serial No. 574,790.

To all whom it may concern:

Be it known that I, JOSEPH C. HOLLINGS- WORTH, citizen of the UnitedStates, residing at Dallas, in the county of Dallas and State of Texas,have invented certain new and useful Improvements in Cotton-Gins, ofwhich the following is a specification.

This invention has relation to cotton gins and particularly to thatclass employing ginning-points instead of saws.

The object of the invention is to provide a ginning cylinder havingginning-points extending obliquely to the surface of the cylinder anddisposed in staggered relation longitudinally of the cylinder, but inrows circum ferentially thereof, although the circumferential rows arenot essential to the operation of the cylinder.

Further objects of the invention are to provide a reversible seed barwhereby seeds are stripped from the ginning cylinder; and an adjustableseed grate comprising a plurality of fingers directed toward the ginningcylinder terminating in close proximity to the ginning-points.

Finally the object of the invention is to provide means of the characterdescribed that will be strong, durable, efficient, and easy ofoperation, simple and comparatively inexpensive to construct, and alsoin which the several parts will not be likely to get out of workingorder.

lVith the above and other objects in view, the invention has relation tocertain novel features of construction and operation, an example ofwhich is described in this specilication and illustrated in theaccompanying drawings, wherein:

Figure 1. is a transverse vertical sectional view of a gin stand showingmy invention embodied therein, Fig. 2. is an end elevation of the same,Fig. 3. is a detail of the seed grate in perspective, Fig. 4. is a planview with a portion broken away to show underlying parts, Fig. 5. is adetail of the clutch in section, Fig. 6. is a sectional detail of theflexible covering of the ginning cylinder showing the ginning-points,Fig. 7. is an underside view of the same, and Fig. 8. is a detail inperspective of the seed bar.

In the drawings the numeral 1 designates a gin stand in which a brush 2of the ordinary open construction is secured on the shaft 3 and isdriven by the belt 4 which passes over the brush pulley 5 and around apulley 6 carried on a shaft 7. This shaft 7 l also carries a ginningcylinder 8 which is revolved in the same direction as the pulley 6 asindicated by the arrows in Figs. 1 and 2. A huller-roller 9 is mountedin the stand on a shaft 10. This roller is driven in the same directionas the ginning cylinder by a belt 11 which travels about pulleys 12 and13 mounted on the outer ends of the shafts 7 and 10 respectively. Forstopping and starting the ginning cylinder and the hullerroller, afriction clutch ring 14 is secured to the pulley 6 and adapted to beengaged by a tapered clutch member 15 splined on the shaft 7 andoperated by a lever 16 supported on the gin stand. The ginning cylinder8 is formed of suitable material and has a smooth periphery or outersurface, preferably without grooves or projections. About this cylindera covering or casing 17 of leather or other suitable material isstretched and tightly secured over the surface. While T prefer to makethe covering 17 of leather and .in one or more pieces, it is to beunderstood that any material suitable for the purpose may be employed.From this covering ginning-points or pins 18 extend obliquely so as toincline toward the direction of rotation of the cylinder. These pins aretapered so as to terminate at their upper ends in comparatively finepoints. W'hile the pins may be secured in the covering in various ways Tprefer to employ a formation similar to an ordinary staple and pass theprongs of the same through the covering from the underside as indicatedat 19 in Figs. 6 and 7, the prongs producing the pins or ginningpoints.The pins as shown in the drawings are disposed in staggered relation andin rows circumferentially of the ginning cylinder. Itis not necessary oreven essential that the pins be disposed in circumferential rows asthere is no part of the gin which projects between the pins and they mayif desired be set in any order.

At the lower end of the inner breast 20 a grate bar 21 is disposedparallel to the shaft 7 and is provided with a plurality of spacedfingers 22 extending toward the ginning cylinder. One end of the bar 21is squared at 23 (Fig. 3) and passes through a sleeve 24 mounted in theend wall `25 of the gin stand. On the portion 23 the lower end of anupwardly extending lever 26 is secured. This lever has slottedengagement with an adjusting block 27 through which a screw 28 aStens.This screw is operated by a hand wheel 29 mounted on the end wall 25 asshown in Fig. 2. By adjusting the screw the grate bar and its fingers,which I have termed a seed grate, is swung, that is the ends of thelingers 22 are swung toward or away from the ginning cylinder accordingto the direction in which the screw is turned. This adjustment is madeaccording to the condition of the cotton which varies.

To the front side of the breast beam 30 a seed bar 31 is secured. Asshown in Fig. 8 this bar has vertical slots 32 at each end and in thecenter and through which slots screws 33 are passed and engaged in thebeam 30. The edges of the bar are beveled at 34 and the face of the baris concaved contiguous to the wall 35 of the roll box 36. The edges 34of the bar are inclined or beveled so that the ginning-points will passacross the adjacent edge and at all times be substantially equi-distanttherefrom. By having both edges beveled the bar may be reversed when oneedge wears and the slots 32 permit an adjustment of the bar to and fromthe ginning cylinder.

The operation of the gin is as follows: The cotton is fed into the outerbreast and is by the huller roller 9 thrown against the ginning cylinderand carried up by the ginning-points or pins 18. The trash and some ofthe seeds will be thrown off and drop out at this point. The cotton iscarried up by the pins 18 to the seed bar 31 which separates the seedtherefrom. Those seeds which are free from lint will drop upon the gratebar and through the same. It will be noted that as the cotton passesupward from the roller 9, the fingers 22 will have a tendency toseparate the seeds from the cotton. The seeds that are not entirely freefrom the lint will be stripped from the ginning cylinder by the seed barand taken up by the roll of cotton in the roll box and again presentedto the ginning cylinder until they are free from lint and drop throughthe grate. The lint that has been entirely freed from seeds is carriedunder the seed bar and removed from the ginning cylinder by the actionof the brush 2, from which it is removed and carried to the gin flue inthe usual manner.

I d esire to call attention to the fact that there are no ribs 0r ingersextending between the ginning pins and therefore the entire surface ofthe ginning cylinder is available for ginning purposes. This arrangementgives the gin a greater capacity and reduces the number of parts whichare Worn by frictional contact with other parts.

What l claim is:

1. ln a cotton gin, the combination of, a ginning cylinder having acovering, ginning pins secured to the cover and inclining therefrom, aseed bar mounted in close proximity to the ginning points above thecenter of the cylinder, a seed grate having fingers extending toward theginning pins from a point in `front of the cylinder, and a huller rollermounted under the seed grate.

2. The combination with a ginning cylinder having inclined ginning pins,the inner breast of a gin, and a huller roller mounted adjacent thecylinder and immediately below the inner breast, of a grate bar mountedat the lower end of the front wall of the inner breast and over thehuller roller, said bar being provided with fingers project-ing towardand terminating in close proximity to the ginning pins of the cylinder,and a seed bar having its lower edge in juxtaposition to the saidginning pins.

Tn testimony whereof have signed my name to this specification in thepresence of two subscribing witnesses.

JOSEPH C. HOLLINGSVORTH.

Witnesses JACK A. SGI-ILEY, Z. M. DUciiwoR'rI-I.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

